Mantle for crushing-heads of gyratory rock-crushers and the like.



1). a. HUNTER & T. a. MJJETON. MANTLE FOR ORUSHING- HEADS 0F GYRATORY ROCK CRUSHERS AND THE LIKE. APPLIOATION FILED 001. 31, 1910 g ggg ggfifi Patented July 1 1.913.

re as ,q

frriir rerun.

DAVID GAVINE HUNTER, SIMIVIER, AND THOMAS GEORGE TRANSVAAL.

rrun'ron, or JACK,

Specification of Letters Patent.

Patented July 1, rare,

Application filed October 31, 1910. Serial No. 589,933.

To all whom 2'15 may concern: Be it known that we, DAVID GAvrNn l-lnn'rnn and THOMAS Gnoncn MUR'roN, both subjects of the King of Great- Britain, and residents of Simmer and Jack, respectively,

' near Germiston, Transvaal, have invented certain new and useful Improvements in -l\lantlcs for the Crushing-Heads of Gyratony,BoclnCrushersand the Like, of which the following is a specification;

This ninvention relates to gyratory rock, ore, or stone breakers orcrushcrs, such for example, as the ,Gates? gyratory rock and ore breaker, {in this type of breaker the crushing is-"accomp'lished by a conical crush- I 'iiig'head or a conical head center piece or .core' covered with arenewable mantle, said center. piece or core being attached to croonstrncted integral with a usually vertical shaft by which the crushing head has a gymtory motion imparted to it inside a suitably constructed basin or receptacle into which the rock or like material to be crushed is introduced' In gyratory Crushers of this class, the conical head or mantle wears to the greatest extent near the lower end, or at or near the part of largest diameter. After the head or mantle has become worn at this point to a considerable extent, it is now necessary to renew the entire head or mantle even though the upper portion thereof has only been but very slightly worn. Ohviously this has entailed considerable waste of material usually of an expensive kind.

The object of our invention is to obviate this waste, and thereby effect a material reduction in maintenance costs or the expense of keeping such machines In good running order.

It consists essentially in. making the conical head or mantle in a plurality of parts or sections, so that when the part or section or parts or sections which are subjected to the greatestamount of wear are sufficiently worn out it 1s only necessary to ronew such worn out part or section or parts or sections, the remaining part or section or .parts or sections being adapted to be fitted to, a new part or section or parts or sections to replace that part or section or those parts or sectionswlnch have been removed. v

The invention will now be described by aid of the accompanying drawing wherein-- Figure 1 represents a crushing head and a portion of its shaft in elevation constructed according to our invention, and Fig. 2 is a sectiomil'elevation of the crushing head with the shaft in elevation.

lrepresents the shaft to which a gyratory motion is imparted in any ordinary or suitable manner. The shaft 1, as'usual, is constructed with a conicalor tapering portion 2 upon which the crushing head center piece or core 3 is positioned. The center piece or core 3 is shown secured to the shaftin the usual manner by means of keys 4:, preferably of zinc (which is reduced to a molten state, and in that condition poured into the key seats) and ring nuts 5, 6 (the upper one of which 6 operates as a check nut) screwed on to reduced portions of the shaft above the conical or tapering portion 2.

In the particular construction illustrated structed in halves or comprisin two or sections of substai'itially equa lengt parts an vupper part or section 7 and a lower part or section 8. The halves 7, 8 are constructed with automatic locking means, shown consist-mg of lnterlocking projections 9, 10

formed at two diametrically opposite points in the mantle. The interlocking projections 9, 10 are shown formed by severing or dividing the halves, parts, or sections 7, 8 by two parallel planes 11, 12, preferably inclined to the longitudinal axis of the crushing head and" mantle. The steps formed between the inner ends of the planes 11, 12 at opposite sides of the mantle are roundedand recessed to form the curved interlocking projections 9, 10. Either or both of the halves or sections 7, 8 may be fixed to the head center 3. In the drawing the part or section 8 is shown fixed to the head center 3 in a known manner, by providing'it, at the lower end on the inside, with lugs 13, 14: which are adapted to pass through slots 15, 16 in the head center, and to engage spiral surfaces 17, 18 providedon the lower end of the head center. The artial rotation ofthe mantle 7 8 when the ugs 13,14 are n engagement with the spiral sura ter and a mantle therefor, said mantlecom .tefithe sections of 5:11

upper section 7 faces 17, 18 draws the on the head center 3. Obviously mantle firmly down instead of may manner. both directions prevent also be fixed to it The projections 9, 10 by locking in any movement of the relative to the lower section 8 when thevgyratory motion is imparted to the shaft 1 and crushing head.

Although we show the mantle constructed in two sections it is to be understood that it may consist of any desired number of sec tions, and the several v sections be connected. by the interlocking projections (as 9, 10) in the manner above described.

In arranging the two-part or sectional mantle on the head center 3 the sect-ions 7 8 are first placed together so that and are then placed-1n tions 9, 1O interlock the projecposition on the head center 3 and secured by .twisting the mantle to engage the spiral surfaces 17, 18.

cause lugs 13, 14 to What we claim as our invention and desire to protect by Letters Patent is:-

1. In rock crushers,

'ter and a mantle therefor, prising'a plurality ends of the sections jections for preventing axial said members.

2. In a rock crusher,

of sections, having interlocking pro-Y a crushing head ce'nsaid mantle comthe adjacent separation of a crushing head cam necting said surfaces.

3. In a rock crusher,

e mantle and having a conical head, c'enter and a conical mantle therefor, said man tle comprising at least at a plurality of plane two sections coacting surfaces on each S96:

tion all lying in parallel planes inclined to the longitudinal axis of the'mantle and having interlocking projections and recesses I connecting said surfaces.

4. In a rock crusher,

head, the sections of the head having por tions automatically int a sectional crushing erlocking upon relative rotary adjustment of the sections whereby axial separation of the sections of the head is prevented.

'- 5. In a rock crusher,

a crushing head centar, and a sectional mantle on said head cend mantle having interlocking portions'and one of said sections being free to automatically turn on said head center to. interlock said portions, whereby axial separation of the mantle sections on the head. cente 6. In a rock crusher, head, each section of right and a, left hand r is prevented.

'a sectional crushing the head having a interlocking portion in any convenient one of which automatically interlocks with its corresponding portion upon relative rotary adjustment of the sections in one direction and the other of which automatically interlocks with its corresponding porsections in the opposite direction whereby axial separation of the sections-of the head is prevented.

ter, and a sectional mantle on said head center, each of the sections of said mantle having a right and a left hand interlocking portion, one of which interlocks with its corresponding portion upon relative rotary adjustmcntof the sections in one direction and the other 'of which interlocks with its-corresponding portion upon relative rotary justment of the section in the opposite d1- rection whereby axial separation of the section of the mantle is prevented.

-8. In a rock crusher, a sectional crushing head comprising at least two sections coacting at a plurality of plane surfaces on each section, all of said planes being parallel and inclined to the longitudinal axis of the head and'said sect-ions having interlocking projections and recesses connecting said surfams.

9. In a rock crusher, a tapered central portion, and two sections of crusher head on said central portion, one of said sections other being freely rotatablethereon until the same is tight on said central portion and both sections being formed with coacting cam surfaces inclined to the axis of said sections. v 10. In rock crushers, a' crushing head center and a mantle therefor, said mantle comprising a plurality of sections formed by separating ,the sections "by two parallel planes and, providing the s ps thereby formed atvtwo opposite sides 0 the mantle with interlocking projections a d recesses. 11. In rock crushers, a conical crushing head center and a conical mantle therefor, said mantlefcomprising a plurality of sections, the joints between the sections being formed by two parallel planes and forming ward their carrying sections.

c 14. In a. rock crusher, a tapered headcention upon relative rotary adjustment of the V being locked-to said central portion and'the 7. In a rock crusher, a crushing head cen- 1,066,277 l i e ter and a sectional mantle on said head oennames to this specification in the presence ter, one of the sections being locked to said of two subscnbing witnesses. head center and the other being freely rotatable thereon until the same is tight on said 5 head center and both sect-ionsbeing formed with coasting cam surfaces inclined to the Witnesses: 7

axis of said sections; W. S. AVES,

In testimony whereof We have signed our A. THOMPSON. 

